The workers in a factory are organized into five-person teams. When conducting a work-environment survey, a researcher randomly selected 10 teams to obtain a total sample of 50 workers. The researcher used ____ sampling.
a. simple random
b. stratified random
c. proportionate stratified random
d. cluster
Question 2
The _______________ was adopted by the World Medical Association in 1964 in order to provide a set of principles to guide the practice of medical research.
Fill in the blank(s) with correct word
On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a
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